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Two-way stretching nylon film capable of being heat sealed and preparation method thereof

A biaxially stretched nylon and film technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of increasing product production costs and restricting nylon films, etc., to achieve convenient preparation, simple material composition, heat sealing high intensity effect

Active Publication Date: 2018-09-04
厦门长塑实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method usually has a relatively thick heat-sealable layer (the heat-sealable material such as polyolefin is much thicker than the nylon layer), which increases the production cost of the product and limits the nylon film itself to a certain extent. Advantages

Method used

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  • Two-way stretching nylon film capable of being heat sealed and preparation method thereof
  • Two-way stretching nylon film capable of being heat sealed and preparation method thereof
  • Two-way stretching nylon film capable of being heat sealed and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Heat-sealable biaxially oriented nylon film is composed of the following raw materials: the skin layer 1 is composed of 70% nylon 6 / 66 / 1010 terpolymer nylon and 30% nylon-6 resin; the core layer is 100% nylon-6 Resin composition; surface layer 2 is composed of 0.5% anti-blocking agent, 0.2% slip agent and 99.3% nylon-6 resin.

[0035] Its preparation steps are as follows:

[0036] (1) mixing copolymerized nylon and nylon-6 resin in proportion, melt blending, extruding, and granulating through a twin-screw extruder to obtain a heat-sealable master batch for subsequent use;

[0037] (2) Put the heat-sealable masterbatch obtained in (1) into the first auxiliary machine of the tape casting machine to make the surface layer 1; put nylon-6 resin and other materials into the main machine and the second auxiliary machine in proportion, respectively, Make core layer and surface layer 2;

[0038] (3) The materials of each layer in (2) are melted and co-extruded and cast to obta...

Embodiment 2

[0042] Heat-sealable biaxially oriented nylon film is composed of the following raw materials: the skin layer 1 is composed of 80% nylon 6 / 1010 / 1212 terpolymer nylon and 20% nylon-6 resin; the core layer is 100% nylon-6 Resin composition; surface layer 2 is composed of 0.6% anti-blocking agent, 0.3% slip agent and 99.1% nylon-6 resin.

[0043] Its preparation steps are as follows:

[0044] (1) mixing copolymerized nylon and nylon-6 resin in proportion, melt blending, extruding, and granulating through a twin-screw extruder to obtain a heat-sealable master batch for subsequent use;

[0045] (2) Put the heat-sealable masterbatch obtained in (1) into the first auxiliary machine of the tape casting machine to make the surface layer 1; put nylon-6 resin and other materials into the main machine and the second auxiliary machine in proportion, respectively, Make core layer and surface layer 2;

[0046] (3) The materials of each layer in (2) are melted and co-extruded and cast to ob...

Embodiment 3

[0050]The heat-sealable biaxially oriented nylon film is composed of the following raw materials: the surface layer 1 is composed of 90% nylon 6 / 66 / 1010 terpolymer nylon and 10% nylon-6 resin; the core layer is composed of 100% nylon-6 Resin composition; surface layer 2 is composed of 0.7% anti-blocking agent, 0.3% slip agent and 99% nylon-6 resin.

[0051] Its preparation steps are as follows:

[0052] (1) mixing copolymerized nylon and nylon-6 resin in proportion, melt-blending, extruding, and granulating through a twin-screw extruder to obtain a heat-sealable master batch for subsequent use;

[0053] (2) put the heat-sealable masterbatch obtained in (1) into the first auxiliary machine of the casting machine to make the surface layer 1; put the nylon-6 resin and other materials into the main machine and the second auxiliary machine in proportion, respectively, Make core layer and surface layer 2;

[0054] (3) the material of each layer in (2) is melted and co-extruded and...

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Abstract

The invention relates to a two-way stretching nylon film capable of being heat sealed and a preparation method thereof. The two-way stretching nylon film capable of being heat sealed is of a three-layer structure composed of a surface layer 1, a core layer and a surface layer 2. The surface layer 1 is prepared from the following raw materials: 70-100% of copolymer nylon and 0-30% of nylon-6 resin;the core layer is prepared from 100% of nylon-6 resin; and the surface layer 2 is prepared from the following raw materials: 0-1% of antiblocking agent, 0-1% of slipping agent and 98-100% of nylon-6resin. The two-way stretching nylon film capable of being heat sealed is formed through fusion co-extrusion, sheet flow-casting and synchronous two-way stretching. The prepared two-way nylon film capable of being heat sealed is simple in production technology, the heat sealing layer is even in thickness, the obtained film has the high heat sealing strength, is environmentally friendly and free oftoxicity, and can be applied to fields of food, medical treatment, electronic packaging and the like.

Description

technical field [0001] The invention relates to the field of film packaging, in particular to a heat-sealable biaxially stretched nylon film and a preparation method thereof. Background technique [0002] Biaxially oriented nylon film is widely used in the field of film flexible packaging due to its excellent mechanical strength, barrier properties, puncture resistance, transparency, oil and chemical solvent resistance, and non-toxicity. However, due to the high melting point of nylon, it is not easy to be heat-sealed, and it is also difficult to heat-seal to other substrate materials, which limits the further application of nylon to a certain extent. [0003] Usually, heat-sealable materials such as nylon and polyolefins such as polypropylene and polyethylene are compounded with solvent-based adhesives in the market, so as to be used in the packaging field. However, this method usually has a relatively thick heat-sealable layer (the heat-sealable material such as polyolefi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/34B32B27/06B32B37/15C08L77/06C08L77/02C08J5/18
Inventor 贾露刘运锦林新土李志嘉
Owner 厦门长塑实业有限公司
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